Hi all
The performance of RSOA (Reflective semiconductor amplifiers ) is quite low compared to EDFAs.SOA and RSOAs are only preferred in applications where in cost is given a higher importance to performance.Since ranjeet is working with next generation networks where a huge deployemnt of Opticak network units already increases the system cost to large extent.So RSOAs are used in place of EDFAs to reduce the cost of these network units although use of EDFAs would give a better performance at much higher cost.
Hope the difference is clear.
Regards